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Cotton Insect Pest Control Issues

Jeff Gore

Cotton Insect Pest Control Issues

Gore

Impact of Planting Date and Varietal Maturity

3744

40

50

60

70

Early

Perc

ent Y

ield

Los

s

22 21

0

10

20

30

40

Mid-April Early-May

Perc

ent Y

ield

Los

s

Planting Date

3 3 3 4

Impact of Planting Date and Varietal Maturity

3844

56Late

23

May Mid-May Late-May

Planting Date

6 7 6 6

Impact of N Rate on TPB Management

2000

2500

3000

3500

Lb. S

eed

cotto

n/ac

re

Number of Plant Bug Sprays

34

0

500

1000

1500

2000

0 40

Lb. S

eed

cotto

n/ac

re

Nitrogen Application

3

Impact of N Rate on TPB ManagementNumber of Plant Bug Sprays

4

55

80 120 160Nitrogen Application Rate

5

Other Factors that Impact Earliness

• Seeding Rate

• Thrips Management

• Disease Management• Disease Management

• Weed Management

• PGR’s

Other Factors that Impact Earliness

Insecticide Application Timings

Neonics

Cotton Aphid

Plan

ting

1stSq

uare

1stFl

ower

~May 1 ~June 1 ~July 1

Tarnished Plant Bug

Insecticide Application TimingsOP’s and

Pyrethroids

Everything

Peak

Flo

wer

Cut

out

~July 1 ~July 21 ~Aug 15

Regional TPB TrialAll Locations - Season Total

80.0

100.0

120.0

No.

Nym

phs

A

B BC BCD B-E B-

35%

0.0

20.0

40.0

60.0

No.

Nym

phs

B-E B--E C-F

64%

-E C-F D-G E-H F-H GHH

56789

Untreated Insecticide Alone

Impact of Adjuvants5

Row

Ft

012345

Acephate (0.75 lb) Centric (2.0 fl oz)

# / 5

Row

Ft

Plots sprayed 2.5 to 3 hours before 1.1

Insecticide Alone Insecticide + Adjuvant

Adjuvants on Rainfastness

Centric (2.0 fl oz) Transform (1.5 oz)

Plots sprayed 2.5 to 3 hours before 1.1 inces of rain.

Large Block Evaluation of Diamond

15

20

25

No.

/ 5

Ft.

**

*

0

5

10

1 2 3

No.

/ 5

Ft.

*

Weeks After Application

Split growers fields (4 total), Diamond applied approx. 3

Large Block Evaluation of Diamond - 2010

**

4 5 6

**

Weeks After Application

Split growers fields (4 total), Diamond applied approx. 3rd week of squaring

Large Block Evaluation of Diamond

1321

1424

12961300

1400

1500

1600

1700

Lbs

Lint

/ A

cre

+128 lb

+173 lb

1148

900

1000

1100

1200

1300

Washington1 Washington2

Lbs

Lint

/ A

cre

Split growers fields (3 total), Diamond applied approx. 3

Location

Large Block Evaluation of Diamond - 2010

1527

1424

1348

1264

+160 lb

+179 lb

1264

Washington2 Sunflower Mean

Split growers fields (3 total), Diamond applied approx. 3rd week of squaring

Location

Insecticide Application Timings

DiamondNeonics

Cotton Aphid

Plan

ting

1stSq

uare

1stFl

ower

~May 1 ~June 1 ~July 1

Tarnished Plant Bug

Insecticide Application TimingsOP’s and

Pyrethroids

Everything

Peak

Flo

wer

Cut

out

~July 1 ~July 21 ~Aug 15

• Dow AgroSciences

• Sulfoxaflor

• 50% WG

• Cotton

• 0.75-2.88 oz/A

• True Bugs:cotton aphidtarnished plant bug

**Transform is not labeled at this time****Transform is not labeled at this time**

• Section 18 granted for 2012 in the Delta counties to control tarnished plant bug

• Section 3 registration expected soon

Transform 50 WG

• Section 3 registration expected soon

• Public comment period just ended(February 12, 2013)

Section 18 granted for 2012 in the Delta counties to control tarnished plant bug

Section 3 registration expected soon

Transform 50 WG

Section 3 registration expected soon

Public comment period just ended

“Do not approve Sulfoxaflor. Do not decimate further the bee populations in the US. madness of continual dumping of these toxic chemicals in our environment must stop.

Comments on EPA Website

time to restore, time to stop destroying and poisoning.”

Please read before approving this Bee Killing Poison: “We’re facing the extinction of a species.”

“Do not approve Sulfoxaflor. Do not decimate further the bee populations in the US. The madness of continual dumping of these toxic chemicals in our environment must stop. It is

Comments on EPA Website

time to restore, time to stop destroying and

Please read before approving this Bee Killing “We’re facing the extinction of a

Tarnished Plant Bug Management with Transform7 Days After Application

15

20

25

30

Nym

phs/

5 ft.

0

5

10

Nym

phs/

5 ft.

cc

c c

+ Transform at 0.022 lb ai/A

Tarnished Plant Bug Management with Transform7 Days After Application

a

c

b

cc c

Cotton Aphid Leaf-Dip Bioassays 72 HAT

80

100

120

140

LC50

(ppm

)

47.8 Fold

0

20

40

60

Centric Sulfoxaflor

LC50

(ppm

)

5.5

Dip Bioassays – 2008-201272 HAT

Sulfoxaflor Carbine

3.3 Fold5.5 Fold

Insecticide Application Timings

DiamondNeonics

Cotton Aphid

Plan

ting

1stSq

uare

1stFl

ower

~May 1 ~June 1 ~July 1

Tarnished Plant Bug

Insecticide Application TimingsOP’s and

Pyrethroids

Everything

Peak

Flo

wer

Cut

out

~July 1 ~July 21 ~Aug 15

Insecticide Application Timings

Diamond

Transforms “Best” FitNeonics

Cotton Aphid

Plan

ting

1stSq

uare

1stFl

ower

~May 1 ~June 1 ~July 1

Tarnished Plant Bug

Insecticide Application TimingsTransforms “Best” Fit OP’s and

Pyrethroids

Everything

Peak

Flo

wer

Cut

out

~July 1 ~July 21 ~Aug 15

11.21.41.61.8

2

Mite

App

sCorrelation Between TPB Control and

00.20.40.60.8

1

0 1 2 3

Mite

App

s

TPB Apps

Control and Spider Mite Control

4 5 6 7 8

TPB Apps

Insecticide Application Timings

Diamond

Transforms “Best” Fit

Cotton Aphid

Plan

ting

1stSq

uare

1stFl

ower

~May 1 ~June 1 ~July 1

Tarnished Plant Bug

Insecticide Application TimingsTransforms “Best” Fit

Neonics

OP’s and Pyrethroids

Everything

Peak

Flo

wer

Cut

out

~July 1 ~July 21 ~Aug 15

TPB Impact on Yields

1000

1100

1200

1300

1400Initiate

Poun

ds (l

int p

er a

cre)

400

500

600

700

800

900

1000

2 3 4

Poun

ds (l

int p

er a

cre)

Week of Flowering at Initiation/Termination of Control

Critical Period

TPB Impact on YieldsTerminate

5 6 7

Week of Flowering at Initiation/Termination of Control

Critical Period

Insecticide Application Timings

Diamond

Transforms “Best” FitNeonics

Cotton Aphid

Plan

ting

1stSq

uare

1stFl

ower

~May 1 ~June 1 ~July 1

Tarnished Plant Bug

Insecticide Application TimingsTransforms “Best” Fit OP’s and

Pyrethroids

Everything

Peak

Flo

wer

Cut

out

~July 1 ~July 21 ~Aug 15

Insecticide Application Timings

DiamondNeonics

Cotton Aphid

Plan

ting

1stSq

uare

1stFl

ower

~May 1 ~June 1 ~July 1

Tarnished Plant Bug

Insecticide Application TimingsOP’s and

Pyrethroids

Everything

Peak

Flo

wer

Cut

out

~July 1 ~July 21 ~Aug 15

Summary and Conclusions

Manage for Earliness

Use Diamond Early

Rotate Chemistry

www.plantmanagementnetwork.org

Summary and Conclusions

Manage for Earliness

Use Diamond Early

Rotate Chemistry

www.plantmanagementnetwork.org

Angus Catchot, Don Cook, Fred Musser, Gus Lorenz, Glenn Studebaker, Scott Akin, Scott Stewart, Roger Leonard, Kelly Tindall, David Kerns, and

Jeff Gore, MSU, Stoneville(662)820-9969

Angus Catchot, Don Cook, Fred Musser, Gus Lorenz, Glenn Studebaker, Scott Akin, Scott Stewart, Roger Leonard, Kelly Tindall, David Kerns, and Sebe Brown